12616231 has 2 divisors, whose sum is σ = 12616232. Its totient is φ = 12616230.

The previous prime is 12616229. The next prime is 12616237. The reversal of 12616231 is 13261621.

It is a weak prime.

It is an emirp because it is prime and its reverse (13261621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12616231 - 2¹ = 12616229 is a prime.

It is a super-2 number, since 2×12616231² = 318338569290722, which contains 22 as substring.

Together with 12616229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12616237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6308115 + 6308116.

It is an arithmetic number, because the mean of its divisors is an integer number (6308116).

Almost surely, 2^12616231 is an apocalyptic number.

12616231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12616231 is an equidigital number, since it uses as much as digits as its factorization.

12616231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

The square root of 12616231 is about 3551.9334171687. The cubic root of 12616231 is about 232.7965522550.

Adding to 12616231 its reverse (13261621), we get a palindrome (25877852).

The spelling of 12616231 in words is "twelve million, six hundred sixteen thousand, two hundred thirty-one".